Pre-require bind when installing bind-dyndb-ldap

bind-dyndb-ldap depends on 'named' group that is created at bind package
pre-install time. Thus, we need to ensure bind is installed before
bind-dyndb-ldap.

Resolves: rhbz#1902811

bind-dyndb-ldap.spec

@@ -12,7 +12,7 @@
 
 Name:           bind-dyndb-ldap
 Version:        11.6
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        LDAP back-end plug-in for BIND
 
 License:        GPLv2+
@@ -31,10 +31,12 @@ BuildRequires:  automake, autoconf, libtool
 %if %{with bind_pkcs11}
 BuildRequires:  bind-pkcs11-devel >= %{bind_version}
 BuildRequires: make
-Requires:       bind-pkcs11 >= %{bind_version}, bind-pkcs11-utils >= %{bind_version}
+Requires(pre): bind-pkcs11 >= %{bind_version}
+Requires: bind-pkcs11-utils >= %{bind_version}
 %else
 Requires: softhsm >= %{softhsm_version}
 Requires: openssl-pkcs11 >= %{openssl_pkcs11_version}
+Requires(pre): bind >= %{bind_version}
 %endif
 
 %description
@@ -64,6 +66,8 @@ rm -r %{buildroot}%{_datadir}/doc/%{name}
 
 
 %post
+[ -f /etc/named.conf ] || exit 0
+
 # Transform named.conf if it still has old-style API.
 PLATFORM=$(uname -m)
 
@@ -111,6 +115,10 @@ sed -i.bak -e "$SEDSCRIPT" /etc/named.conf
 
 
 %changelog
+* Thu Dec 17 2020 Alexander Bokovoy <abokovoy@redhat.com> - 11.6-2
+- Fix requires to bind: require bind installed before bind-dyndb-ldap
+  as we depend on named group
+
 * Mon Nov 23 2020 Alexander Bokovoy <abokovoy@redhat.com> - 11.6-1
 - Upstream release 11.6
 - Use reference counting semantics in destructors according to BIND version